Same problems with me and my friend, we acually didnt notice until after like 6 turns that we were playing two different games. Same issue happened a couple of times after that so we decided to stop playing.

We are investigating a possible Steam issue that would impact games using our peer-to-peer APIs for multiplayer.

I will post an update as soon as I have more information.

I represent a multiplayer group of 700+ people. Since the may 15th update no games have been completed. Some have gone as far as 80 turns before a disconnect but once the disconnect occurs reloads will not work at all. Steam should hurry up players are looking to other servers for civ play!!

Don't quote me but it appears an update received at 1:00 EST on may 19th has fixed the problem. Some members of our group have been testing this. A few games have been completed thus far and reloads worked fine I hope this was the solution we were looking for!!!!